Form page background is showing up on Google Site page

I have a Jotform that is displayed on my Google Site Page via a Gadget (iframe).

It has been displaying ok and I have just noticed that a border dark background is showing above the form on our website. It is not a form issue I don't think, I believe it is a problem with the Gadget on the Google Site....it does not give any options to colour the background of the Gadget.

See two (2) screen shots....one from the website showing the problem and the other showing the settings for the Gadget on our Google Site.

Any help is appreciated..

Inject the following custom CSS codes to remove the background:

html.supernova {

    background: none !important;

}

.supernova .form-all, .form-all {

    border: none !important;

    box-shadow: none !important;

}

To inject, follow our steps here: https://www.jotform.com/help/117-How-to-Inject-Custom-CSS-Codes. 

Welvin,

Thanks for your help that has resolved this issue....